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import { useState, useEffect } from 'react';
import { cva } from 'class-variance-authority';
import { cn } from '../lib/utils';
export type ToastType = 'default' | 'destructive';
export type ToastPosition =
| 'top-left'
| 'top-right'
| 'bottom-left'
| 'bottom-right';
export interface Toast {
id: string;
title: string;
type?: ToastType;
duration?: number;
description?: string;
action?: {
label: string;
onClick: () => void;
};
}
interface ToasterProps {
position?: ToastPosition;
visibleToasts?: number;
}
declare global {
interface Window {
__addToast: AddToastFunction | null;
}
}
const toastVariants = cva(
'relative rounded-lg border w-full px-4 py-3 text-sm grid grid-cols-[1fr_auto] gap-x-4 gap-y-0.5 items-start shadow-lg min-w-[300px] max-w-[500px] text-black',
{
variants: {
variant: {
default: 'bg-white',
destructive: 'bg-white border-destructive',
},
},
defaultVariants: {
variant: 'default',
},
}
);
const POSITION_CLASSES: Record<ToastPosition, string> = {
'top-left': 'top-4 left-4',
'top-right': 'top-4 right-4',
'bottom-left': 'bottom-4 left-4',
'bottom-right': 'bottom-4 right-4',
};
type ToastOptions = Partial<Omit<Toast, 'id' | 'title'>>;
export type AddToastFunction = (title: string, options?: ToastOptions) => void;
const Toaster: React.FC<ToasterProps> = ({
position = 'bottom-right',
visibleToasts = 3,
}) => {
const [toasts, setToasts] = useState<Toast[]>([]);
const timersRef = React.useRef<Map<string, NodeJS.Timeout>>(new Map());
const addToast = React.useCallback(
(title: string, options: ToastOptions = {}) => {
const id = crypto.randomUUID();
const toast: Toast = { id, title, ...options };
setToasts((prev) => [...prev, toast]);
const timer = setTimeout(() => {
setToasts((prev) => prev.filter((t) => t.id !== id));
timersRef.current.delete(id);
}, options.duration || 3000);
timersRef.current.set(id, timer);
},
[]
);
useEffect(() => {
const currentTimers = timersRef.current;
window.__addToast = addToast;
return () => {
currentTimers.forEach((timer) => clearTimeout(timer));
currentTimers.clear();
window.__addToast = null;
};
}, [addToast]);
const visibleToastsCount = Math.max(0, visibleToasts);
const displayedToasts =
visibleToastsCount === 0 ? [] : toasts.slice(-visibleToastsCount);
return (
<div
className={cn(
'fixed flex flex-col gap-3 z-50',
POSITION_CLASSES[position]
)}
>
{displayedToasts.map((toast) => (
<div
key={toast.id}
data-testid={`toast-${toast.id}`}
className={cn(toastVariants({ variant: toast.type }))}
role='alert'
>
<div className='flex flex-col gap-0.5'>
<div className='font-medium tracking-tight'>{toast.title}</div>
{toast.description && (
<div className='text-muted-foreground text-sm [&_p]:leading-relaxed'>
{toast.description}
</div>
)}
</div>
{toast.action && (
<button
onClick={toast.action.onClick}
className='self-center text-sm font-medium underline hover:opacity-80'
>
{toast.action.label}
</button>
)}
</div>
))}
</div>
);
};
const toast = Object.assign(
(title: string, options: ToastOptions = {}) => {
if (window.__addToast) {
window.__addToast(title, { ...options, type: options.type ?? 'default' });
} else {
console.warn('Toaster is not mounted.');
}
},
{
default: (title: string, options: ToastOptions = {}) => {
if (window.__addToast) {
window.__addToast(title, { ...options, type: 'default' });
} else {
console.warn('Toaster is not mounted.');
}
},
destructive: (title: string, options: ToastOptions = {}) => {
if (window.__addToast) {
window.__addToast(title, { ...options, type: 'destructive' });
} else {
console.warn('Toaster is not mounted.');
}
},
}
);
export { Toaster, toast };
|